Enable liquid batch testing

[delphine-demeulenaere]

Description

While there is currently the ability to run single tests and all tests there is no functionality to run a batch of related tests on a template.

I added an extra option to the run-test command to run all tests which contain a common string.

Overall, I understand the changes made and the steps taken to implement this fix. I should note, however, that most of the actual code modifications were applied via cursor. That said, testing indicates that these changes achieve the desired results.

Testing Instructions

silverfin run-test -b "string pattern" -h <template name>
f.e.: silverfin run-test -b "unit_3" -h be_pit_legal_structures

Author Checklist

• Skip bumping the CLI version

Reviewer Checklist

• PR has a clear title and description
• Manually tested the changes that the PR introduces
• Changes introduced are covered by tests of acceptable quality